CN115209851B

CN115209851B - Connected disposable wearing article

Info

Publication number: CN115209851B
Application number: CN202180018202.7A
Authority: CN
Inventors: 山下有一
Original assignee: Daio Paper Corp
Current assignee: Daio Paper Corp
Priority date: 2020-03-25
Filing date: 2021-03-09
Publication date: 2023-12-08
Anticipated expiration: 2041-03-09
Also published as: KR20220158694A; JP2021153714A; CN115209851A; WO2021193000A1; EP4101431A1; JP7455628B2; TW202135755A; EP4101431A4; US20230165735A1

Abstract

To improve the maintenance of a storage space. The above object is achieved by a coupled disposable wearing article comprising: a waist elastic member (71) fixed to the End Flap (EF); and standing gathers (60) provided on both sides in the Width Direction (WD), each having: a linear 1 st curved portion (91) extending in the Width Direction (WD) from the front edge of one rear lodging portion (67 b) to the front edge of the other rear lodging portion (67 b); and a linear 2 nd curved portion (92) extending in the Width Direction (WD) and separated from the 1 st curved portion (91) to the front side, wherein the linear 2 nd curved portion comprises: a 1 st region (10) which is a region adjacent to the rear side of the 1 st bent portion (91); and a 2 nd region (20) which is a region between the 1 st bending portion (91) and the 2 nd bending portion (92), wherein the waist stretch region (79) is provided at least between the left and right rear lodging portions (67 b), and the 2 nd bending portion (92) is a portion having a lower rigidity than the 2 nd region (20) and the 3 rd region (33) adjacent to the front side of the 2 nd bending portion (92).

Description

Connected disposable wearing article

Technical Field

The present invention relates to a coupled disposable wearing article such as a tape type disposable diaper.

Background

A general connected disposable wearing article comprises: the front-rear direction center portion includes a crotch portion at the front-rear direction center, a web portion extending forward from the front-rear direction center portion, and a back portion extending rearward from the front-rear direction center portion, at least the back portion having wing portions extending laterally beyond the crotch portion. The wing portion has a coupling portion detachably coupled to an outer surface of the ventral portion, and the outer surface of the ventral portion has a target portion to which the coupling portion is coupled. In use, the wing portions are wound from both sides of the waist to the outer surface of the ventral portion, and the connection portions of the wing portions are connected to the target portion. Such a coupled disposable wearing article is used for nursing (adult) use in addition to infant use (for example, refer to patent document 1).

In general, since the coupled disposable wearing article has a poor fit in the waistline direction as compared with the pants-type disposable wearing article, the following has been proposed, particularly for improving leakage from the back: a waist stretch region having a waist elastic member is provided in the back side portion, and a standing region between the waist stretch region and the absorber is raised by a contraction force of standing gathers provided on both sides in the width direction, whereby a storage space is formed on the crotch side of the waist stretch region (for example, refer to patent document 1).

Patent document 1 describes that, in order to stably maintain the shape and position of the storage space, it is important that the front edge of the standing area is bent, but the bending position is offset to the rear side due to the influence of external forces in various directions applied during use or when packaging the product, and a crease is generated in the middle of the front-rear direction of the standing area, and the crease may be easily bent at the position of the crease.

Prior art literature

Patent literature

Patent document 1: japanese patent laid-open No. 2001-061888

Disclosure of Invention

Problems to be solved by the invention

Accordingly, the main object of the present invention is to improve the maintenance of the storage space.

Means for solving the problems

The coupled disposable wearing article which solves the above problems is as follows.

< mode 1 >

A joined disposable wearing article, comprising: a crotch part including a front-rear direction center; a ventral portion extending from the front-rear direction center toward the front side; and a back side portion extending from the front-rear direction center to the rear side,

the coupled disposable wearing article comprises:

an absorber which is placed in a range including the crotch portion;

a connecting part provided at both side parts of the back side part and detachably connected to the outer surface of the abdomen side part;

an end wing extending to the rear side of the rear edge of the absorber;

waist elastic members fixed to the end flaps; and

standing gathers, and standing from the surface along the blocking positions of the excrement on both sides in the width direction,

the portion having the waist elastic member has a waist stretch region which is contracted in the width direction together with the waist elastic member and is extensible in the width direction,

the standing gather has: a root portion attached to the outside of the blocking position in the width direction; a main portion extending from the root portion; a front lodging part and a rear lodging part formed by fixing a front end part and a rear end part of the main part in a lodging state; a rising part formed by the front lodging part and the rear lodging part of the main part without being fixed; and a pleat elastic member mounted on at least the front end of the rising portion,

At least the front end portion of the rising portion is contracted in the front-rear direction together with the gather elastic member and is extensible in the front-rear direction,

the coupled disposable wearing article comprises: a linear 1 st bending portion extending in a width direction from a front edge of one of the rear lodging portions to a front edge of the other of the rear lodging portions; and a linear 2 nd bending part extending in the width direction and separated from the 1 st bending part to the front side,

the coupled disposable wearing article comprises: a 1 st region which is a region adjacent to a rear side of the 1 st bending portion; and a 2 nd region as a region between the 1 st bending portion and the 2 nd bending portion,

the waist stretching region is arranged at least between the rear lodging parts on the left side and the right side,

the 2 nd bending portion is a portion having a lower rigidity than the 2 nd region and a 3 rd region adjacent to a front side of the 2 nd bending portion,

the 2 nd region rises from the 2 nd bending portion as a starting point along with the contraction of the rising portion, and the 1 st region is bent back with respect to the 2 nd region at the 1 st bending portion.

(effects of action)

In the coupled disposable wearing article, the 2 nd region is raised from the 2 nd bending portion by the contraction force of the gather elastic member for raising the gathers, and the portion of the waist stretch region located in the 1 st region is pressed against the skin of the wearer by the contraction in the width direction, and the 1 st region is bent to the back side with respect to the 2 nd region at the 1 st bending portion. Therefore, in the present coupled disposable wearing article, as the 2 nd region stands up, the 1 st region on the rear side thereof is pressed against the skin of the wearer, and as a result, the rear edge of the absorber and the front and rear vicinity thereof are recessed over almost the entire width of the absorber, and a deep and wide pocket space is reliably formed. Further, the region 2 is raised on the waist side of the recess as the storage space, and the region 1 on the rear side thereof is pressed against the skin of the wearer, so that the effect of blocking the movement of excrement rearward is high, and the fitting property to the body surface of the wearer is also good.

Further, since the 2 nd bending portion is a portion which is easily bent and has lower rigidity than the front and rear sides thereof, the bending position is not easily shifted to the rear side, and the shape and position of the storage space are easily maintained. In addition, even if the bending position is offset to the rear side of the 2 nd bending portion and some creases are generated due to an external force temporarily applied during use or product packaging, the 2 nd bending portion is easy to bend without change, so that the bending position returns to the 2 nd bending portion when the external force is released, and the shape and position of the storage space are easy to maintain.

< mode 2 >

The coupled disposable wearing article according to claim 1, wherein the waist elastic members are elongated waist elastic members of 2 or more in width direction and arranged at intervals in the front-rear direction,

the 1 st zone and the 2 nd zone are respectively provided with at least one waist elastic member,

the coupled disposable wearing article comprises: a 1 st sheet layer adjacent to the front side of the waist elastic member; and a 2 nd sheet layer adjacent to the back side of the waist elastic member,

the 2 nd region is alternately and repeatedly provided with: a joint portion between the 1 st sheet and the 2 nd sheet, which is continuous from the front edge of the 2 nd region to the rear side across the waist elastic member; and a non-joined portion of the 1 st sheet and the 2 nd sheet, which is continuous from the front edge of the 2 nd region across the waist elastic member to the rear side,

The joint portion is not provided in the 2 nd bending portion.

(effects of action)

With this structure, the front edge of the joint is located at the front edge of the 2 nd region, and the portion where the joint exists, that is, the portion adjacent to the rear side of the 2 nd bent portion has relatively high rigidity due to the presence of the joint. As a result, the rigidity of the 2 nd region can be made higher than that of the 2 nd bent portion by a simple structure employing only a specific joint pattern. Further, the rigidity of the 2 nd region is also improved by the shrinkage in the width direction, so that the storage space is less likely to collapse.

< mode 3 >

The joined disposable wearing article according to claim 1, wherein a stretchable sheet comprising the waist elastic member and a 1 st sheet layer and a 2 nd sheet layer covering both front and back sides thereof is attached to the 2 nd region,

the front edge of the expansion sheet is consistent with the front edge of the 2 nd area,

the expansion piece is not arranged at the 2 nd bending part.

(effects of action)

With this structure, the portion where the expansion piece is located, that is, the portion adjacent to the rear side of the 2 nd bending portion has relatively high rigidity due to the existence of the expansion piece. By a simple structure in which only the expansion and contraction piece is arranged in a specific manner, the rigidity of the 2 nd region can be made higher than that of the 2 nd bending portion. Further, the rigidity of the 2 nd region is also improved by the shrinkage in the width direction, so that the storage space is less likely to collapse.

< mode 4 >

The joined disposable wearing article according to any one of claim 2 or claim 3, wherein the waist elastic member has an elongation of 160 to 230% in the unfolded state.

(effects of action)

The elongation of the waist elastic member can be appropriately determined, and is preferably in the above range from the viewpoint of improving the rigidity of the 2 nd region.

< mode 5 >

The joined disposable wearing article according to any one of aspects 1 to 4, wherein the rear edge of the absorbent body coincides with the rear edge of the 3 rd region,

the absorber is not provided in the 2 nd bending portion.

(effects of action)

In the coupled disposable wearing article, the rigidity of the 3 rd region having the absorber is relatively high, whereas the rigidity is reduced in the 2 nd curved portion having no absorber, and therefore, the rigidity of the 3 rd region can be made higher than the 2 nd curved portion by a simple structure in which only the absorber is provided in a specific arrangement.

< mode 6 >

The joined disposable wearing article according to any one of aspects 1 to 4, wherein the absorbent body comprises: a main absorber adjacent to the front side of the 2 nd bending part; and an auxiliary absorber adjacent to the rear side of the 2 nd bending part in the 2 nd region,

The 2 nd bending portion is a portion between the main absorber and the auxiliary absorber, which is not provided with the absorber.

(effects of action)

In the coupled disposable wearing article, the main absorber and the auxiliary absorber adjacent to the front and rear sides of the 2 nd bending portion are provided as high rigidity portions, respectively, and the portion between them is the 2 nd bending portion of low rigidity without the absorber. In this embodiment, the auxiliary absorber is provided in the 2 nd region, so that the rigidity of the 2 nd region is improved. Therefore, the 2 nd region is reliably erected, and the reserved space is hardly crushed.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the present invention, there can be provided advantages such as an improvement in the maintenance of the storage space.

Drawings

Fig. 1 is a plan view showing an inner surface of a tape type disposable diaper in a state in which the diaper is unfolded.

Fig. 2 is a plan view showing an outer surface of a tape type disposable diaper in a state in which the diaper is unfolded.

Fig. 3 is a cross-sectional view taken along line 6-6 of fig. 1.

Fig. 4 is a cross-sectional view taken along line 7-7 of fig. 1.

Fig. 5 is a cross-sectional view taken along line 5-5 of fig. 1.

Fig. 6 is a cross-sectional view taken along line 9-9 of fig. 1.

Fig. 7 is an exploded assembly view of the main parts.

Fig. 8 is a plan view (the other side is formed symmetrically with respect to the center line) in which a main portion of one side is enlarged with respect to the center line (the dash-dot line) passing through the center in the width direction.

In fig. 9, (a) is a sectional view taken along line 8-8 of fig. 1, and (b) is a sectional view schematically showing its standing state.

Fig. 10 is a plan view (the other side is formed symmetrically with respect to the center line) in which a main portion of one side is enlarged with respect to the center line (the dash-dot line) passing through the center in the width direction.

Fig. 11 is a plan view (the other side is formed symmetrically with respect to the center line) in which a main portion of one side is enlarged with respect to the center line (the dash-dot line) passing through the center in the width direction.

Fig. 12 is an exploded assembly view of the main parts.

Fig. 13 is a plan view (the other side is formed symmetrically with respect to the center line) in which a main portion of one side is enlarged with respect to the center line (the dash-dot line) passing through the center in the width direction.

In fig. 14, (a) is a cross-sectional view corresponding to the 8-8 line cross-section of fig. 1, and (b) is a cross-sectional view schematically showing its standing state.

In fig. 15, (a) is a cross-sectional view corresponding to the 8-8 line cross-section of fig. 1, showing a state in which the storage space is crushed, and (b) is a cross-sectional view taken along the 9-9 line.

Fig. 16 is an exploded assembly view of the main parts.

Fig. 17 is a plan view (the other side is formed symmetrically with respect to the center line) in which a main portion of one side is enlarged with respect to the center line (the dash-dot line) passing through the center in the width direction.

Fig. 18 is a front view of a main portion of the sample in a natural length state.

Fig. 19 is a side view of a sample in a worn state.

Fig. 20 is a top view of the telescoping blade.

Fig. 21 is a plan view showing (a) an expanded state and (b) a natural length state of a main portion of the stretchable sheet.

Fig. 22 is a cross-sectional view (a) 3-3, (b) 4-4 in a natural length state, and (c) 4-4 in a somewhat extended state of fig. 21.

Fig. 23 is a plan view showing (a) an expanded state and (b) a natural length state of a main portion of the stretchable sheet.

Fig. 24 is a (a) 3-3 cross-sectional view, (b) 5-5 cross-sectional view in a natural length state, and (c) 4-4 cross-sectional view in a somewhat elongated state of fig. 23.

Fig. 25 is a plan view (the other side is formed symmetrically with respect to the center line) in which a main portion of one side is enlarged with respect to the center line (the dash-dot line) passing through the center in the width direction.

Fig. 26 is a plan view (the other side is formed symmetrically with respect to the center line) in which a main portion of one side is enlarged with respect to the center line (the dash-dot line) passing through the center in the width direction.

Detailed Description

Fig. 1 to 9 show an example of a tape type disposable diaper, in which symbol X in the drawing indicates the entire width of the diaper except for the connecting tape, symbol L indicates the entire length of the diaper, and dot portions in the cross-sectional view indicate hot melt adhesives as joining means for joining the respective constituent members located on the front and back sides thereof. The hot-melt adhesive may be applied by a known method such as slit coating, continuous linear or dotted droplet coating, spiral or zigzag spray coating, or pattern coating (transfer of the hot-melt adhesive in a relief system). In the fixing portion of the elastic member, a hot melt adhesive may be applied to the outer peripheral surface of the elastic member instead of or together with the method, and the elastic member may be fixed to an adjacent member. Examples of the hot melt adhesive include EVA adhesives, adhesive rubber adhesives (elastic adhesives), olefin adhesives, polyester and polyamide adhesives, and the like, and the hot melt adhesive is not particularly limited. As a joining means for joining the constituent members, a means based on material welding such as heat sealing or ultrasonic sealing may be used.

The tape type disposable diaper comprises: a crotch portion including a center in the front-rear direction LD; an abdominal portion F extending forward from the center in the front-rear direction LD; and a back side portion B extending from the center to the rear side in the front-rear direction LD. The tape type disposable diaper further comprises: an absorber 56 which is disposed in a range including the crotch portion; a top sheet 30 which covers the front side of the absorber 56 and is liquid-permeable; a liquid-impermeable sheet 11 covering the back side of the absorber 56; and an exterior nonwoven fabric 12 covering the back side of the liquid-impermeable sheet and constituting the outer surface of the product.

The materials and characteristic portions of each portion are described below in order.

(absorber)

The absorber 56 may have a rectangular shape (an hourglass shape) in the middle in the front-rear direction, in addition to the rectangular shape as in the illustrated example. The symbol 56x denotes the full width of the absorber 56. The absorber 56 is a portion that absorbs and retains excreted liquid, and may be formed of an aggregate of fibers. As the fiber aggregate, in addition to a fiber aggregate obtained by integrating short fibers such as cotton pulp and synthetic fibers, a fiber obtained by opening tows (fiber bundles) of synthetic fibers such as cellulose acetate as needed may be used Is a fibril assembly of the fiber bundle. When cotton pulp or staple fibers are to be deposited as a fiber basis weight, the fiber can be, for example, 100 to 300g/m ² About, in the case of a fibril aggregate, it may be, for example, 30 to 120g/m ² Left and right. The fineness of the synthetic fibers is, for example, 1 to 16dtex, preferably 1 to 10dtex, and more preferably 1 to 5dtex. In the case of a filament aggregate, the filaments may be uncrimped fibers, but are preferably crimped fibers.

The bending resistance of the absorber 56 is not particularly limited, and when the bending resistance of the absorber 56 in the front-rear direction measured by JIS L1913:2010 "41.5 ° cantilever method" is 75mm or more, the rising of the 2 nd region 20 described later becomes good.

(superabsorbent Polymer particles)

The absorbent body 56 may contain superabsorbent polymer particles in a portion or all of it. The superabsorbent polymer particles include "powders" in addition to "particles". As the superabsorbent polymer particles, those used in such bonded disposable wearing articles can be used as they are. The particle diameter of the superabsorbent polymer particles is not particularly limited, and for example, the following particle diameters are preferable: screening was performed using a 500 μm standard sieve (JIS Z8801-1:2006) (shaking for 5 minutes), and screening was performed using a 180 μm standard sieve (JIS Z8801-1:2006) (shaking for 5 minutes) for particles falling under the sieve by the screening, at which time the proportion of particles remaining on the 500 μm standard sieve was 30% by weight or less and the proportion of particles remaining on the 180 μm standard sieve was 60% by weight or more.

The material of the superabsorbent polymer particles is not particularly limited, but a material having a water absorption capacity of 40g/g or more is preferable. As the super absorbent polymer particles, there are starch-based, cellulose-based, synthetic polymer-based, and the like, and starch-acrylic acid (salt) graft copolymer, saponified starch-acrylonitrile copolymer, crosslinked sodium carboxymethyl cellulose, acrylic acid (salt) polymer, and the like may be used. The shape of the super absorbent polymer particles is preferably a powder or granule of a commonly used super absorbent polymer, but other shapes of super absorbent polymer particles may be used.

As the superabsorbent polymer particles, those having a water absorption rate of 70 seconds or less, particularly 40 seconds or less are preferably used. When the water absorption rate is too low, so-called back flow is liable to occur, that is, the liquid supplied into the absorber 56 is returned to the outside of the absorber 56.

The super absorbent polymer particles preferably have a gel strength of 1000Pa or more. Thus, even when the bulk absorber 56 is produced, the sticky feeling after liquid absorption can be effectively suppressed.

The basis weight of the superabsorbent polymer particles may be suitably determined in accordance with the amount of absorption required for the use of the absorbent body 56. Therefore, it cannot be said that in a general case, it may be 50 to 350g/m ² 。

(packaging sheet)

The absorber 56 may be incorporated as the absorbent unit 50 wrapped with the wrapping sheet 58 in order to prevent the release of the superabsorbent polymer particles or to improve the shape retention of the absorber 56. As the wrapping sheet 58, tissue paper, particularly crepe paper, nonwoven fabric, polyethylene laminated nonwoven fabric, a sheet with small holes, or the like can be used. Among them, a sheet in which the superabsorbent polymer particles do not come out is preferable. In the case of using nonwoven fabrics instead of crepe paper, hydrophilic SMMS (spunbond/meltblown/spunbond) nonwoven fabrics are particularly preferable, and polypropylene, polyethylene/polypropylene, and the like can be used as the material thereof. The fiber basis weight is preferably 5-40 g/m ² Particularly preferably 10 to 30g/m ² 。

In addition to the structure in which the entire absorber 56 is wrapped with one sheet, as shown in fig. 3, the entire absorber 56 may be wrapped with a plurality of sheets such as upper and lower 2 sheets. The wrapper 58 may also be omitted.

(Top sheet)

The top sheet 30 has liquid permeability, and for example, nonwoven fabric having holes or no holes, a porous plastic sheet, or the like can be used.

The top sheet 30 extends from the front end to the rear end of the product in the front-rear direction LD and extends to a position laterally of the absorber 56 in the width direction WD, but, for example, when the starting point of the standing gathers 60 described later is located at a position closer to the center side in the width direction WD than the side edges of the absorber 56, etc., appropriate deformation such as making the width of the top sheet 30 shorter than the full width of the absorber 56 may be performed as needed.

(middle piece)

In order to prevent backflow of liquid through the topsheet 30, an intermediate sheet (also referred to as "second sheet") 40 may be provided on the back side of the topsheet 30. The intermediate sheet 40 may also be omitted.

As the intermediate sheet 40, various nonwoven fabrics can be suitably used, and in particular, a bulky hot air nonwoven fabric can be preferably used. In this case, the resin used for the core may be polypropylene (PP), but Polyester (PET) having high rigidity is preferable. The basis weight is preferably 17-80 g/m ² More preferably 25 to 60g/m ² . The coarseness of the raw material fibers of the nonwoven fabric is preferably 2.0 to 10dtex. For fluffing the nonwoven fabric, it is preferable to use, as all or part of the mixed fibers of the raw material fibers, a core-spun fiber or a hollow fiber having a core not at the center, or a core-spun hollow fiber.

The intermediate sheet 40 in the example shown in the figure is shorter than the width of the absorber 56 and is disposed in the center, but the intermediate sheet 40 may be disposed over the entire width. The intermediate sheet 40 may be provided over the entire length of the diaper, but may be provided only in the middle portion including the excretion position as shown in the example.

(liquid-impermeable sheet)

The liquid-impermeable sheet 11 is not particularly limited, but preferably has moisture permeability. As the liquid-impermeable sheet 11, for example, a microporous sheet obtained by kneading an inorganic filler with an olefin resin such as polyethylene or polypropylene, molding the sheet, and stretching the sheet in a uniaxial or biaxial direction can be suitably used. As the liquid-impermeable sheet 11, a material having a nonwoven fabric as a base material to improve water repellency may be used.

The liquid-impermeable sheet 11 preferably extends in the front-rear direction LD and the width direction WD over the same or a wider range than the absorber 56, but may be configured so as not to cover the ends of the absorber 56 in the front-rear direction LD and the width direction WD, if necessary, in the presence of other water blocking means or the like.

(exterior nonwoven fabrics)

The exterior nonwoven fabric 12 covers the entire back side of the liquid-impermeable sheet 11, and gives the outer surface of the product a cloth-like appearance. In addition to the single nonwoven fabric, a plurality of nonwoven fabrics may be used in a stacked manner. In the latter case, the nonwoven fabrics are preferably bonded to each other by a hot melt adhesive or the like. In the case of using a nonwoven fabric, it is preferable that the fineness of the constituent fibers thereof is 1.6 to 2.3dtex and the basis weight thereof is 15 to 25g/m ² And the thickness of the non-woven fabric is 0.3-0.8 mm.

(standing gathers)

In order to prevent the excrement moving in the lateral direction on the top sheet 30 and prevent so-called side leakage, it is preferable that standing gathers 60 standing from the front surface along the blocking position of the excrement are provided on both sides in the width direction WD of the front surface.

More specifically, the standing gathers 60 have: a root portion 65 fixed to a region including the side wings SF; a main portion 66 extending from the root portion; a front lodging portion 67f and a rear lodging portion 67b formed by fixing the front end portion and the rear end portion of the main portion 66 in a lodged state, respectively; and a rising portion 68 formed in the main portion 66 such that a portion between the front lodging portion 67f and the rear lodging portion 67b is not fixed. Further, a gather elastic member 63 is attached to at least the distal end portion of the rising portion 68.

Each portion of the standing gathers 60 illustrated in the drawing is formed of a gather sheet 62, and the gather sheet 62 is folded in half at the tip end (end portion on the opposite side of the root portion 65 side) of the main portion 66, whereby the range including the free portion has a double-layer structure. The gather elastic member 63 is sandwiched between layers of the portion of the double layer structure. The gather elastic member 63 may be provided only in the rising portion 68, but when the rear end portion in the front resting portion 67f to the front end portion in the rear resting portion 67b are fixed as in the illustrated example, the contraction force of the gather elastic member 63 acts not only on the entirety of the rising portion 68 but also on the ends of the front resting portion 67f and the rear resting portion 67b, and is therefore preferable.

The inner surface of the gather sheet 62 has a joining start in the width direction WD at the side portion of the top sheet 30, and a portion on the outer side in the width direction from the joining start is joined to the inner surface of each side flap SF, that is, the side portion of the liquid-impermeable sheet 11 and the side portion of the exterior nonwoven fabric 12 located on the outer side in the width direction in the example of the figure by a hot-melt adhesive or the like.

The standing gathers 60 are fixed to the top sheet 30 at both ends in the product front-rear direction at the portions on the inner side in the width direction than the joining start end, but the standing portions 68 therebetween are free portions that are not fixed. Accordingly, the standing portion 68 stands up while contracting in the front-rear direction by the contraction force of the gather elastic member 63, and can extend in the front-rear direction, thereby adhering to the body surface. In addition, as the rising portion 68 contracts in the front-rear direction by the contraction force of the gather elastic member 63, the portion having the front lodging portion 67f and the rear lodging portion 67b deforms so as to approach each other.

As is well known, the main portion 66 of the standing gather 60 may be folded in half, and both ends of the main portion 66 in the front-rear direction may be fixed to form a folded portion, as is not shown in the drawings, and the folded portion may be provided with: a base end side portion extending from a portion of the widthwise outer side to the widthwise inner side; and a distal portion folded back from an end edge of the proximal portion on the widthwise central side toward the body side and extending to the widthwise outer side.

The type of the gather sheet 62 is not particularly limited, and in general, a water-repellent gather sheet is used for securing liquid blocking property. In particular, nonwoven fabrics (SMS nonwoven fabric, SMMS nonwoven fabric, SSMS nonwoven fabric, SSMMS nonwoven fabric) having a meltblown layer between spunbond layers are preferable from the viewpoint of achieving both the skin touch and the liquid blocking property. The nonwoven fabric may be used one by one, or may be used by overlapping a plurality of nonwoven fabrics. In the latter case, the nonwoven fabrics are preferably bonded to each other by a hot melt adhesive or the like.

As the gather elastic member 63, a rubber thread (urethane rubber thread having a thickness of about 420 to 1120 dtex) or the like can be used. In addition to the plurality of gather elastic members 63 provided on each side as shown in fig. 1 and 2, 1 gather elastic member may be provided on each side. The elongation of the gather elastic member 63 in the developed state can be appropriately determined, and may be, for example, about 230 to 270%.

(flank)

The illustrated belt-type disposable diaper has a pair of side flaps SF extending laterally from both side edges of the absorber 56, respectively, and does not have the absorber 56. The side flaps SF may be formed of a material (such as the outer nonwoven fabric 12) continuous with the portion having the absorber 56 as shown in the illustrated example, or may be formed by attaching other materials.

(planar pleats)

Side elastic members 64 made of an elongated elastic member such as rubber threads are fixed to each side flap SF in a state of extending in the front-rear direction LD, whereby leg-surrounding portions of each side flap SF are configured as planar gathers. The side elastic member 64 may be provided between the liquid-impermeable sheet 11 and the exterior nonwoven fabric 12 in the side flaps SF, in addition to being provided between the gather sheet 62 and the liquid-impermeable sheet 11 on the outer side in the width direction near the joining start point in the joining portion of the gather sheet 62 as in the illustrated example. In addition to providing a plurality of side elastic members 64 on each side as in the illustrated example, only 1 side elastic member may be provided.

The planar gather is a portion where the contraction force of the side elastic member 64 acts (a portion of the side elastic member 64 is illustrated in the figure). Therefore, in addition to the manner in which the side elastic member 64 is present only at the site of the planar gather, the following configuration is included: the side elastic members 64 are present on the front side, the rear side, or both sides of the planar pleats, but the side elastic members are cut finely at one or more places other than the portions of the planar pleats, or are not fixed to the sheet sandwiching the side elastic members 64, or both, whereby the contractive force does not act at the portions other than the planar pleats (substantially equivalent to the portions where the elastic members are not provided), and the contractive force of the side elastic members 64 acts only at the portions of the planar pleats.

(wing portion)

In the present tape type disposable diaper, the back side portion B has wing portions WP extending outward in the width direction WD than the crotch portion M. Similarly, the abdomen-side portion F also has a wing portion WP extending outward in the width direction WD than the crotch portion M. These wing portions WP may also be formed of a different member from the other portions. However, in the structure having the side flaps SF as in the illustrated example, it is preferable that the concave edges 70 from the side edges of the crotch M to the lower edges 71 of the wing portions are formed by cutting the side portions of the side flaps SF in the middle in the front-rear direction LD, and as a result, the wing portions WP are formed, which is easy to manufacture.

(connecting band)

As shown in fig. 1, 2 and 5, the wing portions WP in the back portion B are each provided with a connecting band 13 detachably connected to the outer surface of the abdominal portion F. When the diaper 10 is worn, the connecting band 13 is wound around the outer surface of the abdomen-side portion F from both sides of the waist, and the connecting portion 13A of the connecting band 13 is connected to an appropriate position on the outer surface of the abdomen-side portion F.

As shown in fig. 5, the connecting band 13 includes: a sheet base 13S having a base end portion 13C fixed to the wing portion WP and a main body portion 13B extending from the base end portion 13C; and a connecting portion 13A provided in a middle portion in the width direction WD of the main body portion 13B of the sheet base 13S and connected to the abdominal portion F. The portion of the main body portion 13B closer to the base end portion 13C than the connecting portion 13A serves as a non-connecting portion that is not connected to the abdominal portion F, and the opposite side serves as a grip portion. These non-coupling portions and the grip portions are constituted only by the sheet base 13S forming the main body portion 13B.

The coupling portion 13A is constituted by a hook (male) of a mechanical fastener (face fastener). The hook member has a plurality of engaging protrusions on its connection surface, and the engaging protrusions may have any shape, such as (a) a shape of a pair of legs, (B) a shape of a pair of legs, (C) a mushroom, (D) a shape of a pair of legs (E) a shape of a pair of legs (a shape in which the engaging protrusions of the pair of legs are joined back to back).

As the sheet base 13S formed from the base end portion 13C to the main body portion 13B, nonwoven fabric, plastic film, polyethylene laminated nonwoven fabric, paper, or a composite material thereof can be used.

The connecting portion 13A in the example shown in the figure is provided on the sheet base 13S of the connecting tape 13 protruding from the wing portion WP, but may be provided directly on the wing portion WP.

(target piece)

The target piece 12T is provided at a connection portion of the connection band 13 in the abdominal portion F.

The material of the target 12T is not particularly limited, and when the connecting portion 13A is a hook, for example, a long fiber nonwoven fabric in which fibers are partially welded to each other by ultrasonic welding in a discontinuous pattern may be used. In this case, the nonwoven fabric of long fibers preferably has a fineness of 5 to 10dtex and a basis weight of 25 to 40g/m ² A nonwoven fabric having a thickness of 0.3 to 0.8 mm.

In the case where the connecting portion 13A is a hook, a target piece 12T may be used, in which a plurality of loop yarns around which engaging protrusions of the hook are wound are provided on the surface of a base material made of a plastic film or a nonwoven fabric. Specific examples thereof are composite sheets in which a pile fiber yarn is sewn to at least the outer surface of a base material. In this sheet, the looped fiber yarns protrude at intervals in the weft direction on the outer surface of the base material, that is, the outer surface side of the disposable diaper, and the looped fiber yarns are combined with each other on the back side (wearer side) of the base material to form a row of intersecting portions of the looped fiber yarns.

In the case where the connecting portion 13A is a hook and the connecting portion of the connecting band 13 in the abdominal portion F is made of a nonwoven fabric (for example, in the case of having the exterior nonwoven fabric 12 as shown in the example), a target sheet 12T of plastic sheet, paper, nonwoven fabric, or the like, which shows a connecting position such as a scale by printing or the like, may be disposed inside the exterior nonwoven fabric 12. In this case, the user can attach the hook material of the attachment portion 13A to the fiber of the exterior nonwoven fabric 12 by winding the hook material around the fiber of the exterior nonwoven fabric 12 at the position of the target piece 12T seen through the exterior nonwoven fabric 12.

On the other hand, when the connecting portion 13A is an adhesive layer, a target sheet obtained by peeling off a surface of a plastic film having a smooth surface and rich in adhesion can be used as the target sheet 12T.

(end wing)

The present tape type disposable diaper has a pair of end flaps EF extending toward the front and rear sides of the absorber 56, respectively, and having no absorber 56. The constituent materials of the end flaps EF vary depending on the structure of the diaper. For example, the end flaps EF may be formed by portions of the top sheet 30, the intermediate sheet 40, the gather sheet 62, the liquid-impermeable sheet 11, and the exterior nonwoven fabric 12 that extend and overlap to the front and rear sides of the absorbent body 56 and are joined to each other. Unlike the example shown in the figure, the end flaps EF are formed by the top sheet 30 and the liquid-impermeable sheet 11 without the intermediate sheet 40, the exterior nonwoven fabric 12, and the like. The end flaps EF may be formed by adding a special sheet for forming the end flaps EF to the front or rear side of the absorber 56.

The front-rear direction LD of the end flap EF in the back portion B is preferably longer than the front-rear direction LD of the base end portion 13C of the connecting band 13. In general, the dimension of the front-rear direction LD of the end flaps EF is preferably about 20 to 25% of the dimension L of the front-rear direction LD of the entire diaper, and in the case of a diaper for infants, it is preferably about 80 to 120 mm.

(waist elastic Member)

As shown in fig. 7 to 9 and fig. 20 (a), 21 and 22, the waist elastic member 71 is fixed to the end flap EF. In the portion having the waist elastic member 71, the waist elastic member 71 contracts in the width direction WD, and as shown in fig. 15, 18, and the like, the gathers 80 are formed on the surface, and the waist stretch region 79 that can extend in the width direction WD is formed. The portion having the waist elastic member 71 may be the waist stretch region 79 as a whole, or only a part thereof may be the waist stretch region 79. That is, the portion having the waist elastic member 71 may be cut off by a known method such as cutting to eliminate stretchability of a portion (for example, both end portions shown in fig. 20) of the waist elastic member 71. As can be seen from this, the waist stretch region 79 is a region surrounded by a line circumscribing a portion of the waist elastic member 71 where all stretchability is not eliminated.

The waist elastic member 71 is not particularly limited as long as it is a material that elastically stretches itself. For example, a film-like elastic material, a stretchable nonwoven fabric, or the like having a mesh shape, a porous shape, or a non-porous shape may be suitably used in addition to an elongated elastic material (for example, a urethane elastic yarn having a thickness of about 420 to 1120 dtex) such as a thread shape or a rope shape.

When an elongated elastic material is used as the waist elastic member 71, it is preferable to include, as in the illustrated example: 2 or more elongated waist elastic members 71 extending in the width direction WD and arranged at intervals in the front-rear direction LD; a 1 st sheet 73 adjacent to the front side of the waist elastic member 71; and a 2 nd sheet 74 adjacent to the back side of the waist elastic member 71.

The 1 st sheet 73 and the 2 nd sheet 74 are not particularly limited, and may be used as other members constituting the end flaps EF (for example, the topsheet 30 and the liquid impermeable sheet 11), or may be provided with a dedicated 1 st sheet 73 and 2 nd sheet 74 as in the illustrated example. That is, in the illustrated example, the stretchable panel 70 having the waist elastic member 71 fixed between the dedicated 1 st sheet 73 and 2 nd sheet 74 is attached to the end flap EF. As the specific 1 st sheet 73 and 2 nd sheet 74, various nonwoven fabrics can be used.

The 1 st sheet 73 and the 2 nd sheet 74 may be two sheets alone as shown in fig. 9, or may be a portion on one side and a portion on the other side of a fold in one sheet folded in half as shown in fig. 15.

The elastic members 71 may be provided at intervals d1 of about 5 to 15 in the front-rear direction LD of 3 to 10 mm. As in the illustrated example, if the position of the front edge (the front-most waist elastic member 71) of the waist stretch region 79 is separated from the position of the rear edge of the absorber 56 in the front-rear direction LD, the rear end portion of the absorber 56 does not contract in the width direction WD, which is preferable. The elongation of the elastic member in the developed state may be about 160 to 230%.

The 1 st sheet 73 and the 2 nd sheet 74 may be joined intermittently in at least one direction, in addition to being joined continuously in both the front-back direction LD and the width direction WD. The fixing portions 76 for fixing the waist elastic member 71 to the 1 st sheet 73 and the 2 nd sheet 74 may be provided at least both ends of the waist elastic member 71.

As in the illustrated example, it is preferable that the arrangement is alternately repeated in the width direction WD: a joint 75 between the 1 st sheet 73 and the 2 nd sheet 74, which is provided continuously or intermittently in a linear shape from the front side of the waist stretch region 79 to the rear side of the waist stretch region 79; and a non-joined portion 77 of the 1 st sheet 73 and the 2 nd sheet 74 continuing in a line from the front side of the waist stretch region 79 to the rear side of the waist stretch region 79. As a result, in a state where the waist stretch region 79 is contracted, as shown in fig. 22 (b) and (c) and fig. 24 (b) and (c), the 1 st sheet 73 and the 2 nd sheet 74 in the non-joined portion 77 expand in opposite directions to each other, and accordingly, as shown in fig. 18, the pleats 80 continuing from the front side of the waist stretch region 79 to the rear side of the waist stretch region 79 are repeatedly formed in the width direction WD. The joint 75 may be provided intermittently in a direction intersecting the width direction WD as shown in fig. 23 and 24, for example, but is preferably continuous in a linear shape in a direction intersecting the width direction WD at a portion other than the 1 st bending portion described later as shown in fig. 20 to 22.

The width 75w of the joint 75 (the dimension in the direction orthogonal to the locus of points equidistant from both side edges of the joint 75 (the tangential line in the case of a curve)) is preferably not changed (fixed), but may be changed. When the width 75w of the joint 75 is changed, the maximum width is preferably 2 to 5 times the minimum width. The width 75w of the joint 75 can be appropriately determined, and if too wide, the air permeability decreases, and if too narrow, the stretchability and the leakage resistance decrease due to peeling of the joint 75, and therefore, it is usually preferably 0.5 to 2mm. The distance 77w between the non-joined portions 77 in the width direction WD in the developed state determines the height of the pleats 80, and is preferably 4 to 8mm in general.

The fixing portion 76 of the waist elastic member 71 is not particularly limited as long as the 1 st sheet 73 and the 2 nd sheet 74 contract together with the waist elastic member 71 to form the waist stretch region 79. For example, in the case of having the joint portions 75 continuous in the direction intersecting the waist elastic member 71 as in the example shown in fig. 21 and 22, each joint portion 75 intersecting the waist elastic member 71 may double as the fixing portion 76. In the case where the waist elastic member 71 does not intersect the joint 75 as shown in fig. 23 and 24, the fixing portions 76 (not shown) may be provided only at the both ends of the waist stretch region 79 separately from the joint 75.

The joining of the 1 st sheet 73 and the 2 nd sheet 74 in the joining portion 75 and the fixation of the waist elastic member 71 in the fixing portion 76 may be performed by a known method such as welding means including heat sealing or ultrasonic sealing, in addition to using a hot melt adhesive. In the joining portion 75, the 1 st sheet 73 and the 2 nd sheet 74 may be joined directly to each other at a portion where the elastic member is not provided, and the 1 st sheet 73 and the 2 nd sheet 74 may be joined indirectly to each other via the waist elastic member 71.

The stretchable sheet 70 may be attached to the uppermost layer closest to the skin side as in the examples shown in fig. 12 to 15 and the examples shown in fig. 16 to 17, in addition to being sandwiched between the topsheet 30 and the outer nonwoven fabric 12 (in the example shown in fig. 7 to 9, the topsheet 30 and the intermediate sheet 40 are shown between the liquid-impermeable sheet 11, but may be between the liquid-impermeable sheet 11 and the outer nonwoven fabric 12). In the latter case, the stretchable sheet 70 may be disposed between the top sheet 30 and the gather sheet 62, in addition to being disposed on the upper side of the gather sheet 62 (i.e., the uppermost layer as a whole) at the portion having the gather sheet 62.

The joining pattern of the expansion sheet 70 and the members of the end flaps EF overlapped with the expansion sheet is preferably such that the same pleats 80 as those formed on the expansion sheet 70 are formed on the surface of the waist expansion region 79. For example, the stretchable panel 70 and the member of the end flap EF overlapped therewith may be continuously joined in both the front-rear direction LD and the width direction WD, or continuously joined in at least one of the front-rear direction LD and the width direction WD. If the joining of the stretchable panel 70 and the members (such as the top sheet 30) of the end flaps EF overlapped therewith continues in the width direction WD, as shown by the dash-dot lines in fig. 22 (c), the gathers 80 formed on the stretchable panel 70 correspond to the gathers 80 formed on the surface of the waist stretchable region 79.

(storage space)

As shown in an enlarged form in fig. 8, it is preferable to have: a linear 1 st curved portion 91 extending in the width direction WD from the front edge of one rear land portion 67b to the front edge of the other rear land portion 67 b; and a linear 2 nd curved portion 92 extending in the width direction WD and away from the 1 st curved portion 91 toward the front side, the linear 2 nd curved portion having: a 1 st region 10 as a region adjacent to the rear side of the 1 st bent portion 91; and a 2 nd region 20 which is a region between the 1 st curved portion 91 and the 2 nd curved portion 92, the waist stretch region 79 is provided at least between the rear lodging portions 67b on the left and right sides.

In this case, as shown in fig. 9 (b), the 2 nd region 20 is raised from the 2 nd bent portion by the contraction force of the gather elastic member 63 of the raised gather 60, and the portion of the waist stretch region 79 located in the 1 st region 10 is pressed against the skin of the wearer by the contraction in the width direction WD, and the 1 st region 10 is bent to the back side with respect to the 2 nd region 20 at the 1 st bent portion. Therefore, in the present coupled disposable wearing article, as shown in fig. 18 and 19, as the 2 nd region 20 stands up, the 1 st region 10 on the rear side thereof is pressed against the skin of the wearer, and as a result, the rear edge of the absorber 56 and the front-rear vicinity thereof are recessed over almost the entire width of the absorber 56, and a deep and wide pocket 21 is reliably formed. Further, the 2 nd region 20 stands up on the waist side as the recess of the storage space 21, and the 1 st region 10 on the rear side thereof is pressed against the skin of the wearer, so that the effect of blocking the movement of excrement rearward is high, and the fitting property to the body surface of the wearer is also good.

The waist stretch region 79 may be provided only in the 1 st region 10 as long as it is provided at least between the rear laid portions 67b on the left and right sides of the 1 st region 10, but is preferably provided over the 1 st region 10 and the 2 nd region 20. This includes not only the manner in which the waist elastic member 71 is provided in each of the 1 st and 2 nd regions 10 and 20 as in the illustrated example, but also the manner in which a sheet-like elastic material is provided so as to extend over the 1 st and 2 nd regions 10 and 20, which is not illustrated.

If the front edge of the back rest 67b (the position of the 1 st bending portion 91) is located on the front side of the front edge of the waist stretch region 79, the back rest 67b having low fitting with the skin protrudes forward of the front edge of the waist stretch region 79 pressed against the skin, and thus leakage may occur through the back rest 67 b. On the other hand, if the waist elastic member 71 is provided in the 1 st region 10 and the 2 nd region 20 (that is, the front edge of the rear resting portion 67b is positioned at the same position as or at the rear side of the front edge of the waist stretchable region 79) as in the illustrated example, the rear resting portion 67b having low adhesiveness to the skin is not present in front of the front edge of the waist stretchable region 79 pressed against the skin, and the rising portion 68 having high adhesiveness to the skin is present. Accordingly, as the 2 nd region 20 is raised, the raised portions 68 of the raised gathers 60 are raised successively from both sides thereof, and thus the leakage-preventing property is more excellent.

When the waist stretch region 79 is provided over the 1 st region 10 and the 2 nd region 20, as shown in fig. 15, 18, and the like, it is preferable that the pleats 80 extending from the 1 st curved portion 91 to the 2 nd curved portion 92 are repeatedly formed on the surface of the 2 nd region 20 in the width direction WD in a state where the portion of the waist stretch region 79 located in the 2 nd region 20 is contracted in the width direction WD. This increases the rigidity of the 2 nd region 20, and the storage space 21 is less likely to collapse. Further, if the pleats 80 extending from the 1 st curved portion 91 to the 2 nd curved portion 92 are repeatedly formed on the surface of the 2 nd region 20 in the width direction WD, as shown in fig. 15 (a) and (b), even if the 2 nd region 20 is tilted toward the crotch side (the surface of the portion having the absorber 56), the space 21 can be maintained to a certain extent by the gaps 81 between the adjacent pleats 80.

The interval between the position of the 1 st curved portion 91 and the position of the 2 nd curved portion 92 in the front-rear direction LD (the same size as the front-rear direction LD of the 2 nd region 20) affects the depth of the formed storage space 21, and thus can be appropriately determined according to the commodity. For example, in general, the distance between the position of the 1 st curved portion 91 and the position of the 2 nd curved portion 92 in the front-rear direction LD may be 10 to 40mm, particularly 20 to 30mm.

The position of the front edge of the waist stretch region 79 in the front-rear direction LD can be determined appropriately, and in general, the distance between the front edge of the waist stretch region 79 and the rear edge of the absorber 56 in the front-rear direction LD is preferably 0.2 to 0.5 times the dimension of the front-rear direction LD of the end flap EF. The distance 79a between the front edge of the waist stretch region 79 and the front edge of the rear land portion 67b can be appropriately determined, and is preferably about 0 to 15 mm.

The waist extension/contraction region 79 may be formed between at least the left and right rear laid portions 67b of the end flap EF, and may be provided only in a part between the left and right rear laid portions 67b, for example. However, if the waist stretch region 79 extends at least to the rear laid portions 67b on the left and right sides as in the illustrated example, the portion between the left and right standing gathers 60 located on the rear side of the 2 nd region 20 is reliably pressed against the skin of the wearer over the entire width direction WD. Therefore, the leakage-proof property is more excellent, and is preferable. In the same manner, the distance 79b between the rear edge of the waist stretch region 79 and the rear edge of the end flap EF in the front-rear direction LD is preferably 17mm or less.

The gather elastic member 63 may not be located on the absorber 56 in the developed state, but if the gather elastic member 63 attached to at least the front end portion of the rising portion 68 is located on the absorber 56, the contraction force of the gather elastic member 63 of the standing gather 60 acts more directly on the 2 nd region 20, and the 2 nd region 20 rises more easily starting from the rear edge of the absorber 56, which is preferable.

In the case of using the stretchable sheet 70 in which the front edge of the rear folded portion 67b is located at the rear side of the front edge of the waist stretchable region 79 and 4 or more elongated waist elastic members 71 are attached at intervals in the front-rear direction LD as in the example shown in fig. 10, it is preferable to provide each of: a plurality of 1 st waist elastic members 71a located in a region between the position of the front edge of the rear lodging portion 67b and the position of the front edge of the waist stretch region 79; and a plurality of 2 nd waist elastic members 71b located in the other regions, and the interval in the front-rear direction LD of the 1 st waist elastic member 71a is set to be 0.4 to 0.6 times the interval in the front-rear direction LD of the 2 nd waist elastic member 71 b. Accordingly, the longitudinally extending gathers are preferably located near the portion of the 2 nd region 20 overlapping the waist stretch region 79, and the stiffness is improved by compression, so that the formed storage space 21 is less likely to collapse.

In the case of using the stretchable sheet 70 in which 4 or more elongated waist elastic members 71 are attached at intervals in the front-rear direction LD, as in the example shown in fig. 8, the front edge of the rear resting portion 67b is located on the rear side of the front edge of the waist stretchable region 79, all of the waist elastic members 71 may have the same elongation, the elongation of a part of the waist elastic members 71 may be different from that of other waist elastic members 71, or the elongation of all of the waist elastic members 71 may be different. For example, it is also preferable to separately set: a 1 st waist elastic member 71a located in a region between the position of the front edge of the rear lodging part 67b and the position of the front edge of the waist stretch region 79; and a 2 nd waist elastic member 71b located in the other region, and the 1 st waist elastic member 71a has an elongation of 1.05 to 1.15 times the elongation of the 2 nd waist elastic member 71 b. In this case, too, the longitudinally extending gathers are preferably located near the portion of the 2 nd region 20 overlapping the waist stretch region 79, and the rigidity is improved by compression, so that the formed storage space 21 is less likely to collapse.

When using the stretchable sheet 70 in which a plurality of elongated waist elastic members 71 are attached at intervals in the front-rear direction LD as in the illustrated example, it is inevitable to form an edge portion having no waist elastic member 71 at the front end portion of the stretchable sheet 70. Here, if the rear end portion of the absorber 56 overlaps with the edge portion of the front end portion of the stretchable sheet 70 as in the example shown in fig. 11 (the rear edge of the absorber 56 may coincide with the front edge of the stretchable sheet 70), the stretchable sheet 70 is increased in rigidity over the entire front-rear direction LD existing in the 2 nd region 20. Therefore, the 2 nd region 20 is reliably erected, and the storage space 21 is less likely to collapse. In addition, if there is a gap between the front edge of the stretchable sheet 70 and the rear edge of the absorber 56, the gap may appear thin and easily leak depending on the user, but if the rear end portion of the absorber 56 overlaps with the edge portion of the front end portion of the stretchable sheet 70, it is preferable that the gap does not give an uncomfortable appearance to the user.

If the 2 nd region 20 is a region having no absorber 56 as in the example shown in fig. 8 and the like, the thickness does not substantially increase even if the 2 nd region 20 is tilted toward the crotch side at the 2 nd bent portion 92, and thus is preferable. However, as in the example shown in fig. 26, the auxiliary absorber 56B may be provided in the 2 nd region 20 separately from the main absorber 56A provided in the 3 rd region 33 adjacent to the front side of the 2 nd bent portion 92, so as to increase the rigidity of the 2 nd region 20. Thus, the 2 nd region 20 is reliably erected, the retention space 21 is less likely to collapse, and the liquid component of the excrement introduced into the retention space 21 can be absorbed and held by the auxiliary absorber 56B of the 2 nd region 20. The auxiliary absorber 56B may be made of the same material and structure as the main absorber 56A.

(1 st bending portion)

The 1 st bending portion 91 is preferably a portion which is easy to bend and has lower rigidity than the 1 st region 10 and the 2 nd region 20. Thus, the bending position of the 1 st bending portion 91 is not easily shifted to the front side, and the shape and position of the storage space 21 are easily maintained. In addition, even if the bending position is shifted to the front side of the 1 st bending portion 91 and some creases are generated by an external force temporarily applied during use or product packaging, the 1 st bending portion 91 is not changed to be easily bent, and therefore, when the external force is released, the bending position returns to the 1 st bending portion 91, and the shape and position of the storage space 21 are easily maintained. The rigidity of each part can be measured by the gelley method as in patent document 1.

The 1 st curved portion 91 is a linear portion extending in the width direction WD from the front edge of one rear land portion 67b to the front edge of the other rear land portion 67b, and the size in the front-rear direction LD thereof can be appropriately determined. The dimension of the 1 st bending portion 91 in the front-rear direction LD is preferably narrow, and is preferably about 1 to 3mm in general. In the illustrated example, the interval is preferably shorter than the interval in the front-rear direction LD of the elastic member.

The means for making the 1 st curved portion 91 a portion having lower rigidity than the 1 st region 10 and the 2 nd region 20 is not particularly limited, and the following two means are typically considered.

The first means is to increase the rigidity by joining means such as hot melt adhesive or welding so that the joining amount (the amount of adhesive or welding) in the 1 st bending portion 91 is smaller than the joining amount of the 1 st region 10 and the 2 nd region 20. Fig. 8 shows a specific example thereof, and the following structure is taken as an object: the waist elastic member 71 is a plurality of 2 or more elongated waist elastic members 71 extending in the width direction WD and arranged at intervals in the front-rear direction LD, and each of the 1 st region 10 and the 2 nd region 20 includes at least one waist elastic member 71, and includes a 1 st sheet 73 adjacent to the front side of the waist elastic member 71 and a 2 nd sheet 74 adjacent to the back side of the waist elastic member 71. That is, in this example, the 1 st region 10 and the 2 nd region 20 are alternately and repeatedly provided with: a joint 75 of the 1 st sheet 73 and the 2 nd sheet 74, which is continuous across the waist elastic member 71 from a portion adjacent to the 1 st curved portion 91 to a portion apart to the rear side thereof; and a non-joined portion 77 of the 1 st sheet 73 and the 2 nd sheet 74 which is continuous across the waist elastic member 71 from a portion adjacent to the 1 st curved portion 91 to a portion apart toward the front side thereof. The 1 st bending portion 91 is not provided with the joint 75.

With this structure, the rigidity of the portion where the joint 75 exists is relatively high, and the rigidity of the portion where the joint 75 does not exist is relatively low. As a result, the 1 st bending portion 91 having low rigidity can be formed by a simple configuration using only the pattern of the specific joint portion 75. Further, the rigidity of the 2 nd region 20 is improved by the shrinkage in the width direction WD, and thus the maintainability of the storage space 21 is also further improved. From the viewpoint of improving rigidity, the joint 75 is preferably formed by welding the 1 st sheet 73 and the 2 nd sheet 74.

The second means is to make the number of component layers in the 1 st bending portion 91 smaller than the number of component layers in the 1 st region 10 and the 2 nd region 20. Fig. 25 shows a specific example thereof, and the stretchable sheets 70A and 70B (polyurethane foam, elastic film, or the like may be used in addition to the structures shown in fig. 8 and 9, etc.) are arranged in the 1 st region 10 and the 2 nd region 20, respectively, and these stretchable sheets are not arranged in the 1 st bending portion 91, and as a result, the number of component layers in the 1 st bending portion 91 is smaller than the number of component layers in the 1 st region 10 and the 2 nd region 20. In this case, the rigidity of the portion where the expansion and contraction pieces 70A, 70B are present is relatively high, and the rigidity of the portion where the expansion and contraction pieces 70A, 70B are absent is relatively low. As a result, the 1 st bending portion 91 having low rigidity can be formed with a simple structure. Further, the rigidity of the 2 nd region 20 is improved by the shrinkage in the width direction WD, and thus the maintainability of the storage space 21 is also further improved.

Either one or both of the above means may be used.

On the other hand, in the case where the auxiliary absorber 56B is provided in the 2 nd region 20, if the rear edge of the auxiliary absorber 56B coincides with the rear edge of the 2 nd region 20, the 1 st bending portion 91 is particularly large in rigidity change from the front side portion thereof, and the bending position is less likely to deviate, which is preferable.

(No. 2 bending portion)

The 2 nd bending portion 92 is preferably a portion that is easy to bend and has lower rigidity than the 2 nd region 20 and the 3 rd region 33 adjacent to the front side of the 2 nd bending portion 92. Thus, the bending position of the 2 nd bending portion 92 is not easily shifted to the front side, and the shape and position of the storage space 21 are easily maintained. In addition, even if the bending position is shifted to the rear side of the 2 nd bending portion 92 and some creases are generated due to an external force temporarily applied during use or product packaging, the condition that the 2 nd bending portion is easily bent is not changed, so that the bending position returns to the 2 nd bending portion when the external force is released, and the shape and position of the storage space 21 are easily maintained. The rigidity of each part can be measured by the gelley method as in patent document 1.

The 2 nd curved portion 92 is a linear portion extending in the width direction WD away from the 1 st curved portion 91 toward the front side, and the size in the front-rear direction LD thereof can be appropriately determined. The dimension of the 2 nd bending portion 92 in the front-rear direction LD is preferably narrow, and is preferably about 1 to 3mm in general. In the illustrated example, the interval is preferably shorter than the interval in the front-rear direction LD of the waist elastic member 71.

The means for making the 2 nd bent portion 92 a portion having a lower rigidity than the 2 nd region 20 is not particularly limited, and the following three means are typically considered.

The first means is to increase the rigidity of the 2 nd region 20 by a joining means such as a hot melt adhesive or welding, so that the 2 nd bent portion 92 is a portion having a lower rigidity than the 2 nd region 20. Fig. 8 shows a specific example thereof, and the following structure is taken as an object: the waist elastic member 71 is a plurality of 2 or more elongated waist elastic members 71 extending in the width direction WD and arranged at intervals in the front-rear direction LD, and each of the 1 st region 10 and the 2 nd region 20 includes at least one waist elastic member 71, and includes a 1 st sheet 73 adjacent to the front side of the waist elastic member 71 and a 2 nd sheet 74 adjacent to the back side of the waist elastic member 71. In this example, the 2 nd region 20 is alternately and repeatedly provided with: a joint 75 of the 1 st sheet 73 and the 2 nd sheet 74 continuous from the front edge of the 2 nd region 20 to the rear side across the waist elastic member 71; and a non-joined portion 77 of the 1 st sheet 73 and the 2 nd sheet 74 continuous from the front edge of the 2 nd region 20 across the waist elastic member 71 to the rear side.

With this structure, the front edge of the joint 75 is located at the front edge of the 2 nd region 20, and the rigidity of the portion where the joint 75 exists, that is, the portion adjacent to the rear side of the 2 nd bent portion 92 becomes relatively high due to the presence of the joint 75. As a result, the rigidity of the 2 nd region 20 can be made higher than that of the 2 nd bent portion 92 by a simple configuration employing only the pattern of the specific joint portion 75. Further, the rigidity of the 2 nd region 20 is also improved by the shrinkage in the width direction WD, so that the storage space 21 is less likely to collapse.

The second means is to make the number of component layers in the 2 nd bending portion 92 smaller than that in the 2 nd region 20, so that the 2 nd bending portion 92 is a portion having a lower rigidity than the 2 nd region 20. Fig. 25 shows a specific example thereof, in which the expansion and contraction sheet 70B (polyurethane foam, elastic film, or the like may be used in addition to the structures shown in fig. 8 and 9) is attached to the 2 nd region 20, the front edge of the expansion and contraction sheet 70B coincides with the front edge of the 2 nd region 20, and the expansion and contraction sheet 70B is not provided in the 2 nd bent portion 92.

With this structure, the rigidity of the portion where the expansion and contraction piece 70B is located, that is, the portion adjacent to the rear side of the 2 nd bent portion 92 becomes relatively high due to the existence of the expansion and contraction piece 70B. Therefore, by a simple structure in which only the expansion and contraction piece 70B is provided in a specific arrangement, the rigidity of the 2 nd region 20 can be made higher than that of the 2 nd bent portion 92. Further, the rigidity of the 2 nd region 20 is also improved by the shrinkage in the width direction WD, so that the storage space 21 is less likely to collapse.

The third means is to make the 2 nd bending portion 92 a portion having a lower rigidity than the 2 nd region 20 by utilizing the improvement in rigidity by the absorber 56 in the 2 nd region 20. Fig. 26 shows a specific example thereof, in which the auxiliary absorber 56B is provided in the 2 nd region 20, and the front edge of the auxiliary absorber 56B coincides with the front edge of the 2 nd region 20. The 2 nd bent portion 92 is a portion having no absorber between the main absorber 56A and the auxiliary absorber 56B. With such a structure, the portion where the auxiliary absorber 56B is located, that is, the portion adjacent to the rear side of the 2 nd bent portion 92 becomes relatively high in rigidity due to the presence of the auxiliary absorber 56B. Therefore, by a simple configuration in which only the auxiliary absorber 56B is provided, the rigidity of the 2 nd region 20 can be made higher than that of the 2 nd bent portion 92.

Any one of the above three means may be used, or two or more thereof may be used.

The means for making the 2 nd curved portion 92 a portion having a lower rigidity than the 3 rd region 33 is not particularly limited, and as shown in the example, it is preferable that the 2 nd curved portion 92 be a portion having a lower rigidity than the 3 rd region 33 by increasing the rigidity of the 3 rd region 33 by the absorber 56. That is, in the example shown in fig. 8 and the like, the rear edge of the absorber 56 (or the main absorber 56A in the example shown in fig. 26) coincides with the rear edge of the 3 rd region 33, and the absorber 56 is not provided in the 2 nd bent portion 92. In this case, the rigidity of the 3 rd region 33 having the absorber 56 is relatively high, whereas the rigidity of the 2 nd bent portion 92 having no absorber 56 is reduced, and therefore, by a simple structure in which only the absorber 56 is arranged in a specific manner, the rigidity of the 3 rd region 33 can be made higher than the 2 nd bent portion 92.

(direction of pleat)

As shown in fig. 8, 9, etc., the non-joined portion 77 and both side edges of the joined portion 75 may be provided in a straight line along the front-rear direction LD, but as shown in fig. 18, 20 (a), 21, and 23, it is preferable that at least one non-joined portion 77 has an inclined portion 72, and the inclined portion 72 extends such that both side edges 77s have an inclination angle θ (acute angle of intersection; the same applies to other inclination angles) of 5 to 45 degrees with respect to the front-rear direction LD. The inclination angle θ of the inclined portion 72 is more preferably 8 to 15 degrees. Here, both side edges 77s of the non-joined portion 77 are determined by the side edges of the joined portion 75. Therefore, when the joined portion 75 continues from the front side of the waist stretch region 79 to the rear side of the waist stretch region 79 as shown in fig. 20 to 22, both side edges 77s of the non-joined portion 77 refer to the side edges of the joined portion 75 in the unfolded state. In addition, when the joined portion 75 is formed intermittently (in a broken line) from the front side of the waist extension/contraction region 79 to the rear side of the waist extension/contraction region 79 as shown in fig. 23 and 24, both side edges of the non-joined portion 77 are virtual lines formed by connecting the side edges of the joined portion 75 in the unfolded state in a straight line in the direction in which the pleats 80 extend. In addition, when the inclination angle θ of the both side edges 77s of the non-joined portion 77 with respect to the front-rear direction LD continuously changes, for example, when the both side edges 77s of the non-joined portion 77 form a curved line such as an arc as shown in an example in fig. 20 (d), the direction of the both side edges 77s of the non-joined portion 77 means the tangential direction of the both side edges 77s of the joined portion 75.

At least a part of the side edges of the pleats 80 formed on the surface of the waist expansion/contraction region 79 are inclined in substantially the same direction along the side edges 77s of the non-joined portion 77 at the portions corresponding to the inclined portions 72 of the non-joined portion 77, and therefore, when urine or soft feces entering the gaps 81 of the adjacent pleats 80 moves in the front-rear direction LD, the urine or soft feces collides with the inclined pleats 80, thereby generating movement resistance. Further, since the gaps 81 between the adjacent pleats 80 are continuous from the front side of the waist stretch region 79 to the rear side of the waist stretch region 79 like the pleats 80, the air permeability is not impaired even in the 1 st region 10 which is in close contact with the skin. Further, since the pleats 80 of the waist stretch region 79 communicate with the recesses to be the storage space 21, if the volume of the recesses to be the storage space 21 is reduced by external pressure (generated when in the sitting position or the supine position, etc.), air in the recesses is pushed out through the gaps 81 of the pleats 80 adjacent to the 1 st region 10, whereas if the volume of the recesses to be the storage space 21 is increased by release of the external pressure, external air is introduced into the recesses through the gaps 81 of the pleats 80 adjacent to the 1 st region 10 (pump action), and thus leak resistance is improved as described above, and ventilation is extremely good.

In this respect, in the illustrated example, it is preferable that all of the non-joined portions 77 located at least between the standing gathers 60 in the waist stretch region 79 have the inclined portions 72, and that all of the non-joined portions 77 located in a range from the rear lodging portion 67b of one standing gather 60 to the rear lodging portion 67b of the other standing gather 60 have the inclined portions 72. Of course, the non-engaging portions 77 having the inclined portions 72 and the non-engaging portions 77 having no inclined portions 72 may be provided every other or every other plurality.

The entire non-joined portions 77 may be the inclined portions 72 as shown in fig. 20 (a) and (b), or may have the inclined portions 72 only in a part as shown in fig. 20 (c) and (d). It is preferable to have the inclined portion 72 at least in the 1 st region 10, but it is particularly preferable to have the inclined portion 72 only in the 1 st region 10, although not shown.

In the case where the non-joined portion 77 having the inclined portion 72 is repeatedly formed from the right side region of the center in the width direction WD to the left side region of the center in the width direction WD as in the example shown in fig. 20 (a), if the inclined portion 72 in the right side region and the inclined portion 72 in the left side region are inclined so as to be located on the center side in the width direction WD as going toward the waist side, respectively, the pleats 80 are formed bilaterally symmetrically, and the appearance is excellent, and therefore, it is preferable. Of course, as in the example shown in fig. 20 (c), the inclined portions 72 in the right side region and the inclined portions 72 in the left side region may be inclined so as to be away from the center in the width direction WD as going toward the waist side.

The pleats 80 are preferably formed symmetrically left and right as in the example shown in fig. 20 (a) and (c), but if the positions of the pleats 80 in the width direction WD are shifted, the aesthetic appearance may be deteriorated instead. In addition, it is often difficult to accurately position such pleats 80 in manufacturing. Accordingly, as in the example shown in fig. 20 (b) and (d), it is also proposed that all the non-joined portions 77 of the waist stretch region 79 have inclined portions 72 parallel to each other. Thus, the pleats 80 are formed neatly without bilateral symmetry, and even if the positions of the pleats 80 in the width direction WD are slightly shifted, the influence on the appearance is small.

Each non-joined portion 77 having the inclined portion 72 may have only the inclined portion 72 with a fixed angle as in the example shown in fig. 20 (a) and (b), but it is preferable that the angles of both side edges of the non-joined portion 77 with respect to the front-rear direction LD change at least from the front side of the waist stretch region 79 to the rear side of the waist stretch region 79 as in the example shown in fig. 20 (c) and (d).

For example, in the example shown in fig. 20 (c), the non-joint portion 77 having the inclined portion 72 has: a 1 st portion P1 extending so as to have an inclination angle θ of 5 to 45 degrees with respect to the front-rear direction LD; and a 2 nd portion P2 extending so as to have an inclination angle γ of 5 to 45 degrees with respect to the 1 st portion P1. By having such 1 st part P1 and 2 nd part P2, even in the case where the direction of the moving force applied to the urine or soft feces entering the gap 81 approaches the direction of one part (easily passes through the inclined part 72), the direction of the other part does not approach the direction of the moving force more than the direction of the one part, and therefore the other part becomes more effective resistance to the movement of the urine or soft feces. The 2 nd portion P2 may not have an inclination angle θ (0 degree in the example of the figure) of 5 to 45 degrees with respect to the front-rear direction LD, but may have an inclination angle θ of 5 to 45 degrees.

In the example shown in fig. 20 (d), the inclination angle δ of each of the side edges of the non-joined portion 77 with respect to the front-rear direction LD continuously varies over the entire longitudinal direction thereof, that is, a curved line such as an arc is formed. Thus, even when the direction of the moving force applied to the urine or soft feces that enters the gap 81 approaches the direction of the portion where the gap 81 is located (the portion is easy to pass through), the direction of the other portion is not approached any more, and therefore, the other portion becomes a more effective resistance to the movement of the urine or soft feces. Therefore, the leakage resistance is further improved.

In order to improve both breathability and leakage resistance, the pleats 80 formed in the waist stretch region 79 are preferably highly rigid. Therefore, the stretchable sheet 70 is preferably interposed between the top sheet 30 and the exterior nonwoven fabric 12 as in the example shown in fig. 7 to 9 (a) than in the case of being attached to the uppermost layer closest to the skin side as in the example shown in fig. 12 to 15 or the example shown in fig. 16 to 17. That is, it is preferable that one or more cover sheets (the intermediate sheet 40 and the top sheet 30 in the illustrated example) are provided on the 1 st sheet 73, and in this case, as indicated by the chain lines in fig. 22 (b) and (c), the cover sheets are joined to the 1 st sheet 73, and the 1 st sheet 73 and the cover sheets are integrally contracted, whereby the gathers 80 are formed on the surface (constituted by the cover sheets) of the waist stretch region 79.

(nonwoven fabrics)

As the nonwoven fabric in the above description, a known nonwoven fabric can be used as appropriate depending on the location and purpose. As constituent fibers of the nonwoven fabric, for example, synthetic fibers (including composite fibers such as core and sheath in addition to single component fibers) such as olefin fibers, polyester fibers, and polyamide fibers such as polyethylene and polypropylene, regenerated fibers such as rayon and cuprammonium fibers, and natural fibers such as cotton may be selected without particular limitation, and they may be mixed together and used. In order to improve the softness of the nonwoven fabric, the constituent fibers are preferably crimped fibers. The constituent fibers of the nonwoven fabric may be hydrophilic fibers (including fibers that are hydrophilic by a hydrophilic agent), or hydrophobic fibers or water-repellent fibers (including fibers that are water-repellent by a water repellent agent). The nonwoven fabric is generally classified into a short fiber nonwoven fabric, a long fiber nonwoven fabric, a spunbond nonwoven fabric, a meltblown nonwoven fabric, a spunlaced nonwoven fabric, a hot-rolled (hot air) nonwoven fabric, a needle punched nonwoven fabric, a point-bonded nonwoven fabric, a laminated nonwoven fabric (SMS nonwoven fabric, SMMS nonwoven fabric, etc. with a meltblown layer interposed between spunbond layers) and the like according to the length of fibers, the sheet forming method, the fiber bonding method, and the laminated structure, and any nonwoven fabric thereof may be used.

< description of terms in the specification >

The following terms in the specification have the following meanings unless specifically noted in the specification.

"front-rear direction" refers to a direction (longitudinal direction) indicated by a symbol LD in the drawing, and "width direction" refers to a direction (left-right direction) indicated by WD in the drawing, the front-rear direction being orthogonal to the width direction.

The "MD direction" and the "CD direction" refer to a flow direction (MD direction) in the manufacturing apparatus and a cross direction (CD direction) orthogonal to the flow direction, one of which is a front-back direction and the other is a width direction depending on the product portion. The MD direction of the nonwoven fabric is the direction in which the fibers of the nonwoven fabric are oriented. The fiber orientation is a direction along which the fibers of the nonwoven fabric are oriented, and can be determined by, for example, a measurement method according to a fiber orientation test method based on zero-distance tensile strength of TAPPI standard method T481, or a simple measurement method for determining the fiber orientation direction from the tensile strength ratio in the front-rear direction to the width direction.

"front side" refers to the side that is closest to the skin of the wearer when worn, and "back side" refers to the side that is furthest from the skin of the wearer when worn.

"surface" refers to the surface of the member that is closest to the skin of the wearer when worn, and "back" refers to the surface of the member that is remote from the skin of the wearer when worn.

"elongation" refers to a value given a natural length of 100%. For example, an elongation of 200% is the same as an elongation of 2 times.

"gel Strength" is determined as follows. To 49.0g of artificial urine (prepared by mixing urea: 2wt%, sodium chloride: 0.8wt%, calcium chloride dihydrate: 0.03wt%, magnesium sulfate heptahydrate: 0.08wt% and ion-exchanged water: 97.09 wt%), 1.0g of a super absorbent polymer was added and stirred with a stirrer. The resulting gel was allowed to stand in a 40 ℃ X60% RH constant temperature and humidity tank for 3 hours and then returned to normal temperature, and the gel strength was measured by a curd meter (manufactured by I.techno Engineering Co., ltd.: curdetter-MAX ME-500).

"basis weight" is determined as follows. The sample or test piece was pre-dried and then placed in a laboratory or apparatus in a standard state (the temperature at the test site is 23.+ -. 1 ℃ C., the relative humidity is 50.+ -. 2%) so as to be in a state of reaching a constant amount. Predrying means that the sample or test piece is brought to a constant amount in an environment at a temperature of 100 ℃. The fibers having a predetermined moisture regain of 0.0% may not be pre-dried. Using a template (100 mm. Times.100 mm) for sample collection, a sample having a size of 100 mm. Times.100 mm was cut from a test piece in a constant state. The weight of the sample was measured, multiplied by 100, and the weight per 1 square meter was calculated as the basis weight.

"thickness" using an automatic thickness gauge (KES-G5 portable compression tester), under load: 0.098N/cm ² Area of pressurization: 2cm ² Is automatically determined under the condition of (2). The thickness of the perforated nonwoven fabric was measured at a portion other than the holes and the projections around the holes.

The water absorption was measured by the method of JIS K7223-1996 "test method for water absorption of superabsorbent resin".

The water absorption rate was measured using "time to endpoint" in JIS K7224-1996 "test method for water absorption rate of superabsorbent resin" using 2g of superabsorbent polymer and 50g of physiological saline.

"expanded state" refers to a state of flat expansion without contraction and relaxation.

Unless otherwise specified, the dimensions of the respective portions refer to the dimensions in the expanded state rather than the natural length state.

The test or measurement is carried out in a laboratory or in an apparatus in a standard state (temperature at the test site of 23.+ -. 1 ℃ C., relative humidity of 50.+ -. 2%) without any description of the environmental conditions in the test or measurement.

Industrial applicability

The present invention is applicable to the above-described example of a coupled disposable wearing article such as a belt-type disposable diaper.

Symbol description

The back side portion of B …, the end flap of EF …, the ventral portion of F …, the front-back direction of LD …, the side flap of SF …, the WD … widthwise direction, the WP … flap portion, θ, γ … inclination angle, 10 … region 1, 11 … liquid impermeable sheet, 12 … outer nonwoven fabric, 12T … target sheet, 13 … fastening tape, 13a … fastening portion, 13B … main body portion, 13C … base end portion, 20 … region 2, 21 … storage space, 30 … top sheet, 33 … region 3, 40 … middle sheet, 50 … absorbent unit, 56 … absorbent body, 58 … package sheet, 60 … standing gather, 62 … gather sheet, 63 … gather elastic member, 65 … root portion, 66 … main portion, 67B … rear gather portion, 67F … front gather portion, 68 … standing gather portion …, 70 waist member …, 71B … elastic member side portion … layer 72, 72B, 37 layer 72, and 77, and a bonding portion … side portion … bent portion …, and a side portion … body portion bonding portion 5280, … absorbent body portion … side portion 5273, and a side portion 5280, and a side portion side-by side portion.

Claims

1. A joined disposable wearing article, comprising: a crotch part including a front-rear direction center; a ventral portion extending from the front-rear direction center toward the front side; and a back side portion extending from the front-rear direction center to the rear side,

The coupled disposable wearing article comprises:

an absorber which is placed in a range including the crotch portion;

a coupling part provided at both side parts of the back side part and detachably coupled to an outer surface of the abdomen side part;

an end wing extending to the rear side of the position of the rear edge of the absorber;

a waist elastic member fixed to the end wing; and

the portion having the waist elastic member has a waist stretch region which contracts in the width direction together with the waist elastic member and is capable of being elongated in the width direction,

the standing gather has: a root portion attached to the outside of the blocking position in the width direction; a main portion extending from the root portion; a front lodging part and a rear lodging part formed by fixing a front end part and a rear end part of the main part in a lodging state; a rising portion formed in the main portion such that a portion between the front lodging portion and the rear lodging portion is not fixed; and a gathered elastic member mounted on at least the front end of the rising portion,

at least the front end portion of the rising portion is contracted in the front-rear direction together with the gather elastic member, and is capable of being elongated in the front-rear direction,

The coupled disposable wearing article comprises: a linear 1 st curved portion extending in a width direction from a front edge of one of the rear lodging portions to a front edge of the other of the rear lodging portions; and a linear 2 nd bending part extending in the width direction and separated from the 1 st bending part to the front side,

the coupled disposable wearing article comprises: a 1 st region which is a region adjacent to a rear side of the 1 st bent portion; and a 2 nd region as a region between the 1 st bending portion and the 2 nd bending portion,

the waist stretching region is at least arranged between the rear lodging parts on the left side and the right side,

with the shrinkage of the rising portion, the 2 nd region rises with the 2 nd curved portion as a starting point, and, at the 1 st curved portion, the 1 st region is curved to the back side with respect to the 2 nd region,

the waist elastic members are elongated waist elastic members of 2 or more in width direction and arranged at intervals in the front-rear direction,

the 1 st zone and the 2 nd zone have at least one of the waist elastic members,

The coupled disposable wearing article comprises: a 1 st sheet layer adjacent to the front side of the waist elastic member; and a 2 nd sheet adjacent to the back side of the waist elastic member,

the 2 nd region is alternately and repeatedly provided with: a junction of the 1 st sheet and the 2 nd sheet, which crosses the waist elastic member from the front edge of the 2 nd region and is continuous to the rear side; and a non-joined portion of the 1 st sheet and the 2 nd sheet, which crosses the waist elastic member from the front edge of the 2 nd region and continues to the rear side,

the joint is not provided in the 2 nd bending portion.

2. The joined disposable wearing article according to claim 1, wherein a stretchable sheet comprising the waist elastic member and a 1 st sheet layer and a 2 nd sheet layer covering both sides of the front and back thereof is attached to the 2 nd region,

the expansion piece is not arranged at the 2 nd bending part.

3. The joined disposable wearing article according to claim 1 or 2, wherein the waist elastic member in the unfolded state has an elongation of 160% to 230%.

4. The joined disposable wearing article according to claim 1, wherein the rear edge of the absorber coincides with the rear edge of the 3 rd region,

The absorber is not provided in the 2 nd bending portion.

5. The joined disposable wearing article of claim 1, wherein the absorbent body comprises: a main absorber adjacent to a front side of the 2 nd curved portion; and an auxiliary absorber adjacent to the rear side of the 2 nd bent portion in the 2 nd region,

the 2 nd curved portion is a portion between the main absorber and the auxiliary absorber without the absorber.